Buggy code:
class IdentityPatchRunner implements InstallationManager . ModificationCompletionCallback { private static final String DIRECTORY_SUFFIX = "jboss-as-patch-" ; private static final File TEMP_DIR = new File ( SecurityActions . getSystemProperty ( "java.io.tmpdir" ) ) ; private final InstalledImage installedImage ; IdentityPatchRunner ( InstalledImage installedImage ) { } public PatchingResult applyPatch ( final PatchMetadataResolver patchResolver , final PatchContentProvider contentProvider , final ContentVerificationPolicy contentPolicy , final InstallationManager . InstallationModification modification ) throws PatchingException { } private PatchingResult applyPatch ( final String patchId , final Patch patch , final IdentityPatchContext context ) throws IOException , XMLStreamException , PatchingException { } public PatchingResult rollbackPatch ( final String patchId , final ContentVerificationPolicy contentPolicy , final boolean rollbackTo , final boolean resetConfiguration , InstallationManager . InstallationModification modification ) throws PatchingException { } public PatchingResult rollbackLast ( final ContentVerificationPolicy contentPolicy , final boolean resetConfiguration , InstallationManager . InstallationModification modification ) throws PatchingException { } @ Override public void completed ( ) { } @ Override public void canceled ( ) { } private void rollback ( final String patchID , final IdentityPatchContext context ) throws PatchingException { } static void restoreFromHistory ( final InstallationManager . MutablePatchingTarget target , final String rollbackPatchId , final Patch . PatchType patchType , final PatchableTarget . TargetInfo history ) throws PatchingException { } static void checkState ( final PatchableTarget . TargetInfo o , final PatchableTarget . TargetInfo n ) { } void portForward ( final Patch patch , IdentityPatchContext context ) throws IOException , XMLStreamException , PatchingException { assert ( patch . getIdentity ( ) . getPatchType ( ) ) == ( PatchType . CUMULATIVE ) ; final PatchingHistory history = context . getHistory ( ) ; for ( final PatchElement element : patch . getElements ( ) ) { final PatchElementProvider provider = element . getProvider ( ) ; final String name = provider . getName ( ) ; final boolean addOn = provider . isAddOn ( ) ; final IdentityPatchContext . PatchEntry target = context . resolveForElement ( element ) ; final String cumulativePatchID = target . getCumulativePatchID ( ) ; if ( BASE . equals ( cumulativePatchID ) ) { continue ; } boolean found = false ; final PatchingHistory . Iterator iterator = history . iterator ( ) ; while ( iterator . hasNextCP ( ) ) { final PatchingHistory . Entry entry = iterator . nextCP ( ) ; final String patchId = ( addOn ) ? entry . getAddOnPatches ( ) . get ( name ) : entry . getLayerPatches ( ) . get ( name ) ; if ( ( patchId != null ) && ( patchId . equals ( cumulativePatchID ) ) ) { final Patch original = IdentityPatchRunner . loadPatchInformation ( entry . getPatchId ( ) , installedImage ) ; for ( final PatchElement originalElement : original . getElements ( ) ) { if ( ( name . equals ( originalElement . getProvider ( ) . getName ( ) ) ) && ( addOn == ( originalElement . getProvider ( ) . isAddOn ( ) ) ) ) { PatchingTasks . addMissingModifications ( cumulativePatchID , originalElement . getModifications ( ) , target . getDefinitions ( ) , ALL_BUT_MISC ) ; } } final DirectoryStructure structure = target . getDirectoryStructure ( ) ; final File modulesRoot = structure . getModulePatchDirectory ( patchId ) ; final File bundlesRoot = structure . getBundlesPatchDirectory ( patchId ) ; final PatchContentLoader loader = PatchContentLoader . create ( null , bundlesRoot , modulesRoot ) ; context . recordContentLoader ( patchId , loader ) ; found = true ; break ; } } if ( ! found ) { <START_BUG> throw new PatchingException ( ( "failed<seq2seq4repair_space>to<seq2seq4repair_space>find<seq2seq4repair_space>patch<seq2seq4repair_space>history<seq2seq4repair_space>entry<seq2seq4repair_space>for<seq2seq4repair_space>" + cumulativePatchID ) ) ; <END_BUG> } } } static PatchingResult executeTasks ( final IdentityPatchContext context , final IdentityPatchContext . FinalizeCallback callback ) throws Exception { } static void prepareTasks ( final IdentityPatchContext . PatchEntry entry , final IdentityPatchContext context , final List < IdentityPatchRunner . PreparedTask > tasks , final List < ContentItem > conflicts ) throws PatchingException { } static PatchingTask createTask ( final PatchingTasks . ContentTaskDefinition definition , final PatchContentProvider provider , final PatchingTaskContext context ) { } static class PreparedTask { private final PatchingTask task ; private final PatchEntry entry ; PreparedTask ( PatchingTask task , IdentityPatchContext . PatchEntry entry ) { } ContentItem getContentItem ( ) { } protected void execute ( ) throws IOException { } } static Patch loadPatchInformation ( final String patchId , final InstalledImage installedImage ) throws IOException , XMLStreamException , PatchingException { } static RollbackPatch loadRollbackInformation ( final String patchId , final InstalledImage installedImage ) throws IOException , XMLStreamException , PatchingException { } static File createTempDir ( ) throws PatchingException { } static File createTempDir ( final File parent ) throws PatchingException { } static PatchingException rethrowException ( final Exception e ) { } static void checkUpgradeConditions ( final UpgradeCondition condition , final InstallationManager . MutablePatchingTarget target ) throws PatchingException { } }

Fix:
throw MESSAGES . patchNotFoundInHistory ( cumulativePatchID ) ;